Electric switch.



F. KEMERER.

I ELECTRIC SWITCH. Arr'ucmon FILED 0'01. 8. 1912.

Patented J une 1, 1915.

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F. KEMERER.

ELEfiTRIC swncu.

I APPLICATION FILED OCT-8,1912. V 1,141,803. Patented June 1, 1919.

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2 31 the well cont i waxed scendls drawing clown the trolley lever until when the predetermined level of the Water hesloeen reached, the trolley Wheel will he in such elevated position that the arm, Which is oil the ,sppropriate length, will ride of! or seidiwl'leel end. time break the connection'to stop the pump, As the arm freed when riding is the "Wheel it will fall in the slot 8 and reaching the bottom wall of said-slot will he deflected to one side, as previously described, so that the free end of the rod is beyond the plume of the trolley Wheel. As the level of the ater in the Well again rises the trolley wheel N of the lever is rleprwsed until the arm thereon rides into the clip of the push her and on further movement of the lever depresses said push her With the effect to elevate the replacing block. The upward movement of this block carries the free end. of the rod 19 upwardly shove the trolley Wheel and the inclined surface of the replacing block guides saicl'arin into a position to be engag'cd by the trolley Wheel. Tl thus reestablished and the pum started.

This device is entirely automatic and. Will actively control the pump in accordance with the level of Water in the Well so that under no conditions Will the uinp continue operating after the level 0 the Well has fallen below the siphon. The disadvantages of the pump under such conditions Will be understood where the pump is operating simply on air it becomes heated and soon rendered unfit for further use. Aside from the trolley Wheel and its connections for the terminal oi'the circuit, and the rod. 19 and its circuit connections all parts are eficctively insulated so thrt under no circunr stances can the circuit be closed except in manner described.

What is claimed i 1. A. control switch for mining turbine pumps, 2. frame, a. contact rod forming one circuit terminal supported on the frame for circuitis vertical and lateral movement, means for guiding the'rod and deflecting it laterally in ts vertical movement 1n one direction, a

trolley-lever including a contact Wheel to circuit terminal supported on the frame for vertical and lateral movement, means for guidimg the rod and deflecting it laterally in its vertical movement in one direction, a trolley lever including a contact Wheel to engage the rod in the elevation of the lever, said lever heing'of a length to permit disengagement of the rod from the Wheel at a.-

predetermined position of the lever, and

means to elevate the rod and restore it to normal path to he engaged by the Wheel.

3. A control switch. for mining turbine pumps, a frame, a contact rod forming one circuit terminal supported on the frame for vertical lateral movement, means for guiding the rod and deflecting it laterally in its vertical movement in one direction, a trolley lever including a contact Wheel to engage the rod in the elevation of the lever, said lever being: of a length to permit disengagement of the rod from the Wheel at a predetermined position of the lever, a push her to elevate the rod and laterally deflect the same to restore it to normal position, and means carried by the lever to operate the push her. I

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK KEMERER.

Witnesses M, J. Fnunrrmonn, dorm liloLznAUsEn. 

